“This result provides overwhelming evidence that the object is indeed a black hole and yields valuable clues about the workings of such giants, which are thought to reside at the center of most galaxies.”
Sagittarius A* is 27,000 light-years away and looks about as big as a donut on the Moon. Eight radio observatories were linked into one Earth-sized telescope to see it. More than 300 researchers spent five years turning the data into one blurry orange ring. It is the best thing public science money bought this year.